| Boom to Santiago do Cacem | 1,105.04 mi (1,778.38 km) |
| Boom to Santo Andre | 1,104.47 mi (1,777.47 km) |
| Boom to Santo Tirso | 908.66 mi (1,462.34 km) |
| Boom to Sao Bras de Alportel | 1,135.06 mi (1,826.70 km) |
| Boom to Sao Felix da Marinha | 930.00 mi (1,496.70 km) |
| Boom to Sao Joao da Madeira | 933.33 mi (1,502.05 km) |
| Boom to Sao Joao de Ver | 932.14 mi (1,500.13 km) |
| Boom to Sao Mamede de Infesta | 920.18 mi (1,480.88 km) |
| Boom to Sao Pedro do Sul | 928.51 mi (1,494.30 km) |
| Boom to Satao | 919.38 mi (1,479.61 km) |
| Boom to Seia | 936.19 mi (1,506.66 km) |
| Boom to Senhora da Hora | 922.57 mi (1,484.73 km) |
| Boom to Serpa | 1,079.38 mi (1,737.09 km) |
| Boom to Serta | 983.59 mi (1,582.94 km) |
| Boom to Sesimbra | 1,091.37 mi (1,756.39 km) |
